Below are the release notes for the app version 1.0.6 and firmware 1.0.6. Please make sure you follow the below steps. 

Step 1 - Update the app to the latest version
Step 2 - Update the firmware to the latest version
Step 3 - Reset the module through the app or by pressing the program button for 10 seconds
Step 4 - Power off and power on the module
Step 5 - Reconfigure the module

New functionality

• Do a full reset of the module when pressing the program button for 10 seconds
• Add option to use Z21 (Roco) addressing in the app (preset all outputs and preset per output)
• Rework CV fields and values to follow the NMRA standards
• Add Multilanguage password reset emails
• Show update icon when there is a new firmware available in the device list
• Show app version in the opening screen menu (language menu)
• Show proper error message when there is now internet connection
• Add option to change decoder address through the app (9999)

Solved bugs

• By default, select the DCC protocol when using mixed signals when using the Z21 black or white command station
• Issues are solved when enabling RailCom on the Z21 black or white command station
• Some styling issues for iOS are solved
• Location feature is unknown bug for older android devices is solved
• Issues are solved when doing multiple firmware updates after each other on iOS
• Issue is solved when using a .info email address when creating an account